linux-toradex.git/drivers/clk/at91, branch v4.4.52

clk: at91: fix check of clk_register() returned value

2016-06-08T01:14:34+00:00

commit cb0ceaf77d93964a0d00477c79f4499123f6159c upstream.

The clk_register() function returns a valid pointer to struct clk or
ERR_PTR() error code, this makes a check for returned NULL value
useless and may lead to oops on error path.

Signed-off-by: Vladimir Zapolskiy 
Acked-by: Alexandre Belloni 
Acked-by: Boris Brezillon 
Fixes: bcc5fd49a0fd ("clk: at91: add a driver for the h32mx clock")
Signed-off-by: Stephen Boyd 
Signed-off-by: Greg Kroah-Hartman

clk: at91: add generated clock driver

2015-10-01T19:48:11+00:00

Add a new type of clocks that can be provided to a peripheral.
In addition to the peripheral clock, this new clock that can use several
input clocks as parents can generate divided rates.
This would allow a peripheral to have finer grained clocks for generating
a baud rate, clocking an asynchronous part or having more
options in frequency.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Boris Brezillon 
[sboyd@codeaurora.org: Transition to new clk_hw provider APIs]
Signed-off-by: Stephen Boyd

clk: at91: add PMC sama5d2 support

2015-10-01T19:39:44+00:00

Add support for the new sama5d2 SoC and adapt capabilities.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: modify PMC peripheral clock to deal with newer register layout

2015-10-01T19:39:43+00:00

As some more information is added to the PCR register, we'd better use
a copy of its content and modify just the peripheral-related bits.
Implement a read-modify-write for the enable() and disable() callbacks.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: cleanup PMC header file for PCR register fields

2015-10-01T19:39:41+00:00

Add _MASK and _OFFSET values and cleanup register fields layout.

Signed-off-by: Nicolas Ferre 
Signed-off-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: system: don't try to free_irq when there is no IRQ

2015-09-16T22:22:22+00:00

In the error path of at91_clk_register_system(), sys->irq is freed
unconditionally but it may not exist or be request at all.

Signed-off-by: Alexandre Belloni 
Acked-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: utmi: use pmc_read when the at91_pmc is available

2015-09-16T22:22:20+00:00

at91_pmc_read is a workaround to allow external drivers to acces some
registers of the PMC. There is no need for it in clk-utmi.c as we aready
have a pointer to the struct at91_pmc.

Signed-off-by: Alexandre Belloni 
Acked-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: at91: Convert to clk_hw based provider APIs

2015-08-24T23:48:47+00:00

We're removing struct clk from the clk provider API, so switch
this code to using the clk_hw based provider APIs.

Acked-by: Boris Brezillon 
Signed-off-by: Stephen Boyd

clk: Replace __clk_get_num_parents with clk_hw_get_num_parents()

2015-08-24T23:48:43+00:00

Mostly converted with the following semantic patch:

@@
struct clk_hw *E;
@@

-__clk_get_num_parents(E->clk)
+clk_hw_get_num_parents(E)

Acked-by: Boris Brezillon 
Cc: Chao Xie 
Cc: Krzysztof Kozlowski 
Cc: Javier Martinez Canillas 
Cc: Tomasz Figa 
Cc: Maxime Ripard 
Cc: "Emilio López" 
Acked-by: Tero Kristo 
Cc: Geert Uytterhoeven 
Acked-by: Sylwester Nawrocki 
Signed-off-by: Stephen Boyd

clk: kill off set_irq_flags usage

2015-07-28T18:59:41+00:00

set_irq_flags is ARM specific with custom flags which have genirq
equivalents. Convert drivers to use the genirq interfaces directly, so we
can kill off set_irq_flags. The translation of flags is as follows:

IRQF_VALID -> !IRQ_NOREQUEST
IRQF_PROBE -> !IRQ_NOPROBE
IRQF_NOAUTOEN -> IRQ_NOAUTOEN

For IRQs managed by an irqdomain, the irqdomain core code handles clearing
and setting IRQ_NOREQUEST already, so there is no need to do this in
.map() functions and we can simply remove the set_irq_flags calls. Some
users also modify IRQ_NOPROBE and this has been maintained although it
is not clear that is really needed. There appears to be a great deal of
blind copy and paste of this code.

Signed-off-by: Rob Herring 
Acked-by: Boris Brezillon 
Cc: Mike Turquette 
Acked-by: Stephen Boyd 
Cc: linux-clk@vger.kernel.org
Signed-off-by: Stephen Boyd